On this week’s episode, the critics discuss the celebrity of French economist Thomas Piketty and the surging popularity of his book Capital in the Twenty-First Century. Is Piketty a modern-day Keynes or just a new name to drop at liberal cocktail parties? Next the gabbers turn to Last Week Tonight With John Oliver on HBO. Cheeky and uncensored, the British comedian of Daily Show fame brings a global perspective to late night. And finally, the critics welcome Slate assistant editor J. Bryan Lowder to discuss his recent series “Rethinking Spring Cleaning.” Is the annual ritual an outdated relic or the key to comfort at home?